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2 252 458

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IPC

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Application

2003125287/06, 2003-08-18

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Start date

2003-08-18

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Actual filing date

2003-08-18

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Published

2005-05-20

(72)

Inventor

Likhachev Ju.I.Trojanov V.M.Folomeev V.I.Enin A.A.Kushmanov A.I.Sinikov Ju.G.Ustimenko A.P.Ionov V.B.Molchanov V.L.Levin E.I.Kobelev S.N.Aleksandrov A.B.

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Holder

Otkrytoe Aktsionernoe ObshchestvoOtkrytoe Aktsionernoe Obshchestvo Zavod Khimkontsentratov"Otkrytoe Aktsionernoe Obshchestvo Zavod"

NUCLEAR REACTOR FUEL ASSEMBLY Russian patent published in 2005 - IPC

Abstract RU 2252458 C1

FIELD: nuclear power engineering; rigid frame components for fastening fuel assemblies.

SUBSTANCE: proposed fuel assembly has top and bottom nozzles intercommunicating through guide channels disposed in subchannels of spacer grids. Guide channels are fixed to at least but-end spacer grids. Spacer grid height and subchannel wall thickness δ are chosen so that their quantitative characteristics meet design and experimentally evaluated conditions. Such mechanical design of fuel assembly provides for enhancing its resistance to transverse and longitudinal bending and angular stiffness in guide channel-subchannel pairs, reducing intrinsic flexure of fuel assembly in spans between spacer grids and free bending of fuel assembly in nonuniform neutron and temperature fields due to reduced liability of alloy E635 to radiation growth.

EFFECT: improved mechanical design of fuel assembly.

9 cl, 3 dwg

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RU 2 252 458 C1

Authors

Likhachev Ju.I.

Trojanov V.M.

Folomeev V.I.

Enin A.A.

Kushmanov A.I.

Sinikov Ju.G.

Ustimenko A.P.

Ionov V.B.

Molchanov V.L.

Levin E.I.

Kobelev S.N.

Aleksandrov A.B.

Dates

2005-05-20—Published

2003-08-18—Filed